acerbone@adirondackdailyenterprise.com TUPPER LAKE The Tupper Lake Central School District temporarily reverted to remote learning Tuesday after a staff member tested positive, with plans to return to in-person learning on Thursday if staffing levels allow, according to Superintendent Russ Bartlett. Bartlett said he learned about the positive test result after Monday’s school board meeting and sent out a call to families at around 8:30 p.m. letting them know of the last-minute change. He said though the staff member was from just one of the two school buildings both went remote for extra safety until Franklin County Public Health can determine the extent of the possible contacts.